Mechanical refrigeration



1,688,892 C. C. SPREEN MECHANICAL REFRIGERATION Filed Jan. 29, 192'ooooooooeoooododoooo 0 2 ooooooooooooooooooooo 1,. l

z oooooooooooooooooooo I ooooooooooooooooooooo 000000000000 OOOOOOOOOOOOQ 000000 Charles C. Spar e em. Inventor Attorneis Patented a. 23,1928.

UNITED STATES PATENT CHARLES C. SPBEEN, OF DETROIT, MICHIGAN MECHANICALREFRIGERATION.

I Application filed January 29, 1927. Serial No. 164,426.

My invention relates to mechanical re-frigvide new and improvedapparatus of this type.

In the drawin accompanying this specification and forming a part of thisapplication I have shown, for purposes of illustration, one 1 form whichmy invention may assume, and in these drawings: 2

Figure 1 is a front elevation showing the embodiment of my inventiondisclosed herein, while Figure 2 is a are 1.

The embodiment of my invention herein shown comprises a refrigeratorcabinet 11 having a refrigerating compartment 12 which 2 houses anexpander 13 consisting of a plurality of substantially identical units14 each comprising a pair of spaced headers 15 having in opposed facesplurality of apertures 16 designed to receive the ends of the crosstubes 17 which connect the headers together in spacedrelation to eachother.

In order to maintain the pipes in spaced relation as well as to increasethe refrigerating effect of the unit the pipes 17 of each unit areprovided with a multiplicity of plate-like fins 18 having perforationspe-rl'nittin g them to be slipped onto the pipes in such manner thatthey will be disposed at right angles to the axes of the pipes 17.

One of the headers 15 of the top. unit 1+! is connected to therefrigerant inlet valve 19 of the refrigerating system, the remainingheaders 15 are connected together by pipes 20 in such manner that theassembled units fornr a single-refrigerant expansion chamber, and theremaining header 15 of the unit farthest rcmoved from the unit 14connected to the inlet section on the line 22 of Figvalve 19 isconnected by a pipe 21 to the com-o pressor of the system, not shown.

The several units are connected together inspaced relation by supportingmeans consisting of a plurality of brackets 22 attached to the to wall23 of the compartment 12 by means 0 bolts 24,:md each consisting of ametal strap bent upon itself and provided at spaced intervals with loops25 adapted to engage the ends of the headers 15.

The edges of the fins 18 engage and support sleeve-like receptacles 26adapted to receive ice trays 27.

From the above disclosure it will be obvious to those skilled in the artthat I have provided i a refrigerant expansion unit which may be used invarying numbers to form a. refrigerant expansion apparatus of anydesired size and capacity. a

At the same time it will be obvious to those skilled in the art that theembodiment of my invention here-in shown and described may be variouslychanged and modified without departing from the spirit of the inventionor sacrificing the advantages thereof, and it therefore will beunderstood that thedisclosure herein is illustrative only, and that myinvention is not limited thereto;

I claim 1. Refrigerant expansion apparatus comprising :a plurality ofrefrigerant expansion units formed substantially identical, and eachcomprising a refrigerant expansion compartment, consisting of a. pairofheaders with connecting tubes; fin means on said connecting tubes; icetray receptaclescarried by said finmeans; a framework connecting saidrefrigerant expansion compartments into a single refrigerant expansionunit; and conduits connecting said hcadersinto single refrigerantexpansion chamber.

OFFICE.

2. Refrigerant expansion apparatus com-;

prising: a plurality of refrigerantexpansion units formed substantiallyidentical, and each comprising a refrigerant expansion compartment,consisting of a pair of headers with connecting tubes: fin means on'saidconne ting tubes; ice tray receptacles carried bvsaid fin means; aframework connecting said headers into a single refrigerant expansionunit; and conduits connecting said headers into asingle refrigerantexpansion chamber.

3. Refrigerant expansion apparatus com-' prising a plurality ofrefrigerant expansion units formed substantially identical, and ea hincluding 'a refrigerant expansion compart- I ment consisting of a pairof headers with connecting tubes, fin means on said connecting tubes,ice tray receptacles carried by said fin means. said ice. trayreceptacles being arranged in thermal contact withthe fins on adjacenttubes of adjacent expansion units, a framework connectingzsa-idrefrigerant ex pansion compartments into a single refrigerant expansionunit, and conduits connecting said headers into a single refrigerantexpansion chamber.

In testimony whereof signature. I gnaaLES Og SPREEN.

I hereunto afiix my

